cyclization 中文意思是什麼
cyclization
解釋
n. 名詞 【化學】環合，環的形成。-
Cyclization occurs readily with dilute alkali.
遇到稀堿就容易環化。 -
The natural product ( ) - dihydroactinidiolide was synthesized from citral via following steps : cyclization, cyanation, hydrolysis - cycization and dehydration in 40. 24 % total yield
摘要以檸檬醛為原料，經環化、羥腈化、水解關環和脫水4步反應，以40 . 24 %的總產率合成了（ ） -氫獼猴桃內酯。 -
Cyclization of olefines
烯烴環化 -
Crude oil cyclization
原油環化 -
Synthesis of benzimidazoles from o - nitroanilines in a one - step reductive cyclization process
鄰硝基苯胺還原關環一步法合成苯並咪唑類化合物 -
Using bf3 - et2o as a catalyst, the title compound was synthesized from allyl alcohol and epichlorohydrin by a series reaction included addition and cyclization
烯丙醇和環氧氯丙烷在三氟化硼乙醚絡合物的催化作用下進行加成和環化反應制得標題化合物。 -
Diazaspiro [ 4. 4 ] nonane was synthesized from malononitrile as the starting material by a series of nucleleophilic displacement, hydrolytic cyclization and carbonyl reduction
摘要以丙二腈為原料，經過親核取代、水解環合、羰基還原系列反應，合成了2 ， 7 -二氮螺[ 4 . 4 ]壬烷。 -
Methods pinocembrin and its derivatives were synthesized with 2, 4, 6 - trihydroxy - phenylethanone as the starting material via four steps including protection of the hydroxy - group, condensation, cyclization and deprotection
方法以2 ， 4 ， 6 -三羥基苯乙酮為起始原料，經羥基保護、縮合、環化、脫保護合成目標化合物。 -
In order to reduce time in this procedure, we realize a fast cyclization algorithm based on the hash table. experimental results show that this approach is efficient and automated in test vector translation
實驗結果表明，在此波形格式基礎上的測試向量轉換，不僅在速度上得到提高，同時針對大容量的測試向量集合，也能獲得較高的壓縮結果。 -
Long chain alkyl benzenes is the product of cyclization - decarboxylation - aromatization of fatty acid, with the help of clay minerals catalytic effect, which comes from bacteria, seaseed and higher plant lipid ; or the reaction product of monocylic aromatics and fatty acid alkyl group under the same conditions
長鏈烷基苯主要是細菌、藻類和高等植物類脂化合物中脂肪酸在粘土礦物催化下發生環化脫羧再芳構化或單環芳烴與脂肪酸烷基化反應形成的產物。 -
From a viewpoint of organic synthesis chemistry, the recent development and applications of molecular iodine as a catalyst in organic reactions including the formation and cleavage of common protecting groups, oxidation, reduction, cyclization, addition, substitution and rearrangement are reviewed
從有機合成化學的角度，按反應類型綜述了分子碘作為催化劑在有機化學中的應用，碘催化的反應主要涉及保護基團的形成和裂解、氧化和還原反應、成環反應、加成反應、取代反應和重排反應等。 -
The paper introduces a new highly - effective synthesis method. decoquinate was synthesized with catechol as starting materials via substitution, reduction, and at last cyclization with " dowtherm a " as solvent
摘要以鄰苯二酚為原料，通過一系列取代反應，再經過還原、縮合，最後在高沸點的混合有機溶劑中關環。制備的3 -喹啉羧酸乙酯衍生物的總收率為24 . 2 % 。 -
Hydroxyquinol triacetate was prepared from p - benzoquinone by 1, 4 - addition reaction with acetic anhydride and then 6, 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid. then 6, 7 - dimethoxy coumarin was synthesized by methylating from 6, 7 - dihydroxy coumarin with an overall yield of 74. 4 %. the procedure was practical. its structure was confirmed by ir and 1hnmr
對苯醌與乙酸酐經1 ， 4 -加成生成1 ， 2 ， 4 -苯三酚三乙酸酯，然後與蘋果酸反應經水解、環合反應得6 ， 7 -二羥基香豆素，再經甲基化得到6 ， 7 -二甲氧基香豆素，總收率為74 . 4 % ，整個過程反應條件溫和，操作方便，適合工業生產的要求，對產品結構進行了ir和1hnmr表徵。 -
Mirtazapine was prepared by a seven - step reaction, namely nucleophilic ring - opening reaction, chlorination, cyclization, uncleophilic substitution, hydrolysis, reduction and cyclization from styrene oxide and n - methylethanolamine as the starting materials, with overall yield of 22. 6 %
摘要以環氧苯乙烯和n -甲基乙醇胺為起始原料，經親核開環、氯代和環合反應得到中間體1 -甲基3 -苯基哌嗪。 -
The recent advances in olefins oligomerization catalyzed by metallocene catalyst have been reviewed. emphasis is given to the catalytic reactions, cyclization and prospect of application of metallocene catalyst
摘要本文介紹近年來國內外在茂金屬催化劑烯烴劑聚與環化方面的研究進展，主要側重於茂金屬催化劑烯烴劑聚， ， -二烯的環化及應用前景。
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